One of the experiences that drove me into the field of Environmental Engineering was finding fewer and fewer natural places to swim while growing up. When I came across this article about a public natural swimming pool in Minneapolis, the idea of a more natural swimming pool really resonated with me.
However, the practical implementation seems to be expensive and not without problems (such as extensive maintenance and multiple closures due to elevated bacteria levels from wild fowl).
Do you think these system will become more widespread? Have you designed or seen one (apparently, they are more widespread in Europe and Australia). It just seems like such a cool idea...